Whats 你 over all opinion on OC(fan characters) x 大炮, 加农炮 characters?

Depends.

If it's only because the OC creator wants their character to be paired up with canon, I find it annoying. They can have that pairing in their head and keep it to themselves, which I'm fine with. but it's only when they start going around and making it obvious when it really annoys me. For example, I've had a few OCxCanon relationships in a few roleplays I've been in. The pairings stay in the RP(s), and outside of them, the OCs are single. If that makes sense.
But normally I'm fairly tolerant of them. It's only when they're paired up for no reason whatsoever and made obvious that I don't like them.

Anyway, I find this DA stamp to reflect my opinion: link

Sorry, I can go, like, forever on this. xD

honestly, im not really crazy about it...

reason being when i watch a 显示 或者 whatever, i have the specific couples i love, and i dont really like to pair those people up with other characters, including ocs. im the kinda person that will stick with the same shipping(s) for as long as i like the show.

I agree with Me_Iz, it Kinda annoys When they are paired that way...I Don't know why...

As long as their OC is not some crazy Mary-Sue, I'm fine with it.